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1.发明授权
公开(公告)号：US5100447A
公开(公告)日：1992-03-31
申请号：US575256
申请日：1990-08-30
CPC分类号： F25J3/0219 , C01C1/0476 , F25J3/0223 , F25J3/0233 , F25J3/0257 , F25J3/0276 , F25J3/0285 , F25J3/08 , F25J2200/02 , F25J2200/04 , F25J2205/40 , F25J2205/60 , F25J2205/82 , F25J2210/20 , F25J2215/04 , F25J2270/12 , F25J2270/14 , F25J2270/42 , Y02P20/129 , Y02P20/52 , Y10S62/924
摘要： The present invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, methane, hydrogen, and nitrogen which comprises the steps of (a) passing the feed mixture through a pressure swing adsorption system to remove carbon monoxide, methane and part of the nitrogen thereby producing a fraction containing an increased amount of argon, and (b) passing the argon fraction to a cryogenic fractional distillation system to remove hydrogen and the remaining nitrogen in the fraction as a distillate product and to produce a pure argon product. In a second embodiment, the invention is directed to a method for recovering argon from a feed mixture comprising argon, carbon monoxide, methane, hydrogen, and nitrogen which comprises the steps of (a) passing the feed mixture through a first cryogenic fractional distillation system to remove carbon monoxide, hydrogen, and nitrogen as distillate products and to produce a fraction containing an increased amount of argon, and (b) passing the argon fraction to a second cryogenic fractional distillation system to remove methane and to produce pure argon as a distillate product.
摘要翻译： 本发明涉及从包含氩气，一氧化碳，甲烷，氢气和氮气的进料混合物中回收氩的方法，其包括以下步骤：（a）使进料混合物通过变压吸附系统以除去一氧化碳， 甲烷和部分氮气，从而产生含有增加量的氩的馏分，和（b）将氩馏分通入低温分馏系统以除去作为馏出物产物的馏分中的氢和剩余的氮，并产生纯的 氩产品。 在第二个实施方案中，本发明涉及从包含氩气，一氧化碳，甲烷，氢气和氮气的进料混合物中回收氩气的方法，该方法包括以下步骤：（a）使进料混合物通过第一低温分馏系统 去除一氧化碳，氢气和氮气作为馏出物产物，并产生含有增加量的氩的馏分，和（b）将氩馏分通入第二低温分馏系统以除去甲烷并产生纯氩作为馏出物 产品。
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